Diffusion‐weighted imaging using readout‐segmented echo‐planar imaging, parallel imaging, and two‐dimensional navigator‐based reacquisition in detecting acute optic neuritis

Wan, Hailin; Sha, Yan; Zhang, Fang; Ren, Hong; Tian, Guohong; Fan, Hailun

doi:10.1002/jmri.25026

Cited by 23 publications

(15 citation statements)

References 22 publications

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“…Third, 8 of 124 DWI studies could not be interpreted due to inadequate image quality. Future study using periodically rotated overlapping parallel lines with enhanced reconstruction technique or readout-segmented echo-planar imaging technique might be helpful to reduce the artifacts (921). …”

Section: Discussionmentioning

confidence: 99%

Diffusion Weighted Imaging for Differentiating Benign from Malignant Orbital Tumors: Diagnostic Performance of the Apparent Diffusion Coefficient Based on Region of Interest Selection Method

et al. 2016

Korean J Radiol

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ObjectiveTo evaluate the differences in the apparent diffusion coefficient (ADC) measurements based on three different region of interest (ROI) selection methods, and compare their diagnostic performance in differentiating benign from malignant orbital tumors.Materials and MethodsDiffusion-weighted imaging data of sixty-four patients with orbital tumors (33 benign and 31 malignant) were retrospectively analyzed. Two readers independently measured the ADC values using three different ROIs selection methods including whole-tumor (WT), single-slice (SS), and reader-defined small sample (RDSS). The differences of ADC values (ADC-ROIWT, ADC-ROISS, and ADC-ROIRDSS) between benign and malignant group were compared using unpaired t test. Receiver operating characteristic curve was used to determine and compare their diagnostic ability. The ADC measurement time was compared using ANOVA analysis and the measurement reproducibility was assessed using Bland-Altman method and intra-class correlation coefficient (ICC).ResultsMalignant group showed significantly lower ADC-ROIWT, ADC-ROISS, and ADC-ROIRDSS than benign group (all p < 0.05). The areas under the curve showed no significant difference when using ADC-ROIWT, ADC-ROISS, and ADC-ROIRDSS as differentiating index, respectively (all p > 0.05). The ROISS and ROIRDSS required comparable measurement time (p > 0.05), while significantly shorter than ROIWT (p < 0.05). The ROISS showed the best reproducibility (mean difference ± limits of agreement between two readers were 0.022 [-0.080–0.123] × 10-3 mm2/s; ICC, 0.997) among three ROI methods.ConclusionApparent diffusion coefficient values based on the three different ROI selection methods can help to differentiate benign from malignant orbital tumors. The results of measurement time, reproducibility and diagnostic ability suggest that the ROISS method are potentially useful for clinical practice.

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Section: Discussionmentioning

confidence: 99%

Diffusion Weighted Imaging for Differentiating Benign from Malignant Orbital Tumors: Diagnostic Performance of the Apparent Diffusion Coefficient Based on Region of Interest Selection Method

et al. 2016

Korean J Radiol

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“…The imaging comparison between RESOLVE‐IVIM and IVIM using SS‐EPI reveals that compared to SS‐EPI, RESOLVE‐IVIM demonstrated more specific details of anatomic structures, especially for the anterior segment of the ON. As reported, the orbital RESOLVE technique could exhibit better image quality because it results in relatively fewer artifacts and distortions …”

Section: Discussionmentioning

confidence: 67%

Assessment of nonarteritic anterior ischemic optic neuropathy with intravoxel incoherent motion diffusion‐weighted imaging using readout‐segmented echo‐planar imaging, parallel imaging, and 2D navigator‐based reacquisition

Lü

Sha

Wan

et al. 2017

Magnetic Resonance Imaging

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“…Since in the exenteration specimen, devitalized fungal hyphae were identified only in the tissue from the orbital apex, we propose that our patient went blind not from direct neural invasion of the optic nerve by fungus but from acute posterior ischaemic optic neuropathy (PION), perhaps from fungal angio-invasion of small meningeal arteries supplying the optic nerve in and around the optic foramen. 1,2 PION is a difficult clinical diagnosis 3 that can, in some cases, be convincingly validated by showing restricted diffusion along a segment of the optic nerve [4][5][6][7][8][9][10][11][12][13] as in this case. Restricted diffusion along the optic nerve can also occur in PION from septic cavernous sinus thrombosis 14,15 , in traumatic 16 and in lymphomatous optic neuropathy 17 , in optic neuritis 10,18,19 and at the optic disc in papilledema.…”

Section: Discussionmentioning

confidence: 85%

Invasive Fungal Sinusitis Presenting as Acute Posterior Ischemic Optic Neuropathy

Ghabrial

Ananda

Hal

et al. 2017

Neuro-Ophthalmology

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Invasive fungal sinusitis causes painful orbital apex syndrome with ophthalmoplegia and visual loss; the mechanism is unclear. We report an immunocompromised patient with invasive fungal sinusitis in whom the visual loss was due to posterior ischaemic optic neuropathy, shown on diffusion-weighted MRI, presumably from fungal invasion of small meningeal-based arteries at the orbital apex. After intensive antifungal drugs, orbital exenteration and immune reconstitution, the patient survived, but we were uncertain if the exenteration helped. We suggest that evidence of acute posterior ischaemic optic neuropathy should be a contra-indication to the need for orbital exenteration in invasive fungal sinusitis.

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Diffusion‐weighted imaging using readout‐segmented echo‐planar imaging, parallel imaging, and two‐dimensional navigator‐based reacquisition in detecting acute optic neuritis

Cited by 23 publications

References 22 publications

Diffusion Weighted Imaging for Differentiating Benign from Malignant Orbital Tumors: Diagnostic Performance of the Apparent Diffusion Coefficient Based on Region of Interest Selection Method

Diffusion Weighted Imaging for Differentiating Benign from Malignant Orbital Tumors: Diagnostic Performance of the Apparent Diffusion Coefficient Based on Region of Interest Selection Method

Assessment of nonarteritic anterior ischemic optic neuropathy with intravoxel incoherent motion diffusion‐weighted imaging using readout‐segmented echo‐planar imaging, parallel imaging, and 2D navigator‐based reacquisition

Invasive Fungal Sinusitis Presenting as Acute Posterior Ischemic Optic Neuropathy

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